Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices
Reexamination Certificate
2007-07-19
2010-06-22
Patel, Rajnikant B (Department: 2838)
Electricity: electrical systems and devices
Housing or mounting assemblies with diverse electrical...
For electronic systems and devices
C363S131000, C363S144000, C361S709000, C361S719000
Reexamination Certificate
active
07742303
ABSTRACT:
The present invention provides a highly reliable electric power converter reduced in parasitic inductance.An electric power converter that includes a capacitor module which has a DC terminal, an inverter which coverts a direct current into an alternating current, and heat release fins which cool the inverter, is constructed so that: the inverter has a power module including a plurality of power semiconductor elements; the power module further has a metallic base, a dielectric substrate provided on one face of the metallic base, a power semiconductor element fixed to the dielectric substrate, and a DC terminal; the metallic base has the heat release fins on the other face; the DC terminal in the power module and the DC terminal in the capacitor module are each formed by stacking flat plate conductors via an insulator; the two positive and negative DC terminals have respective front ends bent in opposite directions; a plane including the bent sections is used as a surface for connecting the power module and the capacitor module; and the insulators overlap each other at the connection surface.
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Azuma Katsunori
Mori Mutsuhiro
Nakatsu Kinya
Crowell & Moring LLP
Hitachi , Ltd.
Patel Rajnikant B
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